#include<iostream>
#include<vector>

using namespace std;

// c = A * b
vector<int> mul(vector<int> &A, int b){
	vector<int> C;
	for(int i = 0, t = 0; i < A.size() || t; i ++ ){
	   if(i < A.size()) t += A[i] * b;
	   C.push_back(t % 10);
	   t /= 10;
	}
	while(C.size() > 1 && C.back() == 0) C.pop_back();
	return C;
  } 
  
int main(){
	string a;
	int b;
	
	cin >> a >> b;
	
	vector<int> A;
	for(int i = a.size() - 1; i >= 0; i -- ) A.push_back(a[i] - '0');
	
	vector<int> C = mul (A, b);
	
	for(int i = C.size() - 1; i >= 0; i -- ) cout << C[i]; 
	return 0;
} 